[RFC v1] nvme: add cse, ds, ms, nsze and nuse to sysfs

[Christoph Hellwig]

On Mon, Nov 27, 2023 at 08:44:52AM -0700, Keith Busch wrote:
> > I'd probably spell out metadata_size, or probably even better
> > metadata_bytes to match the unit postfixes elsewhere in the block code.
> 
> Should this even be an nvme specific attribute? I thought we should have
> blk-integrity.c report its 'tuple_size' attribute instead. That should
> work as long as we're not dealing with extended metadata at least, but
> that's kind of a special format that doesn't have block layer support.

Reporting the tuple size is a good idea.  But is that enough for
the existing nvme-cli use case?